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EP0693795A1 - Connecteur métallisé partiellement avec au moins un terminal coaxial ou biaxial - Google Patents

Connecteur métallisé partiellement avec au moins un terminal coaxial ou biaxial Download PDF

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Publication number
EP0693795A1
EP0693795A1 EP94202142A EP94202142A EP0693795A1 EP 0693795 A1 EP0693795 A1 EP 0693795A1 EP 94202142 A EP94202142 A EP 94202142A EP 94202142 A EP94202142 A EP 94202142A EP 0693795 A1 EP0693795 A1 EP 0693795A1
Authority
EP
European Patent Office
Prior art keywords
connector
cavities
metallized
terminals
cavity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP94202142A
Other languages
German (de)
English (en)
Other versions
EP0693795B1 (fr
Inventor
Derek Andrews
Bernardus Lambertus F. Paagman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Berg Electronics Manufacturing BV
Original Assignee
Connector Systems Technology NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Connector Systems Technology NV filed Critical Connector Systems Technology NV
Priority to EP94202142A priority Critical patent/EP0693795B1/fr
Priority to DE69417224T priority patent/DE69417224T2/de
Priority to US08/503,124 priority patent/US5743765A/en
Priority to KR10-1995-0021282A priority patent/KR100355731B1/ko
Priority to JP7187538A priority patent/JPH08288019A/ja
Publication of EP0693795A1 publication Critical patent/EP0693795A1/fr
Application granted granted Critical
Publication of EP0693795B1 publication Critical patent/EP0693795B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6598—Shield material
    • H01R13/6599—Dielectric material made conductive, e.g. plastic material coated with metal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6581—Shield structure
    • H01R13/6585—Shielding material individually surrounding or interposed between mutually spaced contacts
    • H01R13/6586—Shielding material individually surrounding or interposed between mutually spaced contacts for separating multiple connector modules
    • H01R13/6587—Shielding material individually surrounding or interposed between mutually spaced contacts for separating multiple connector modules for mounting on PCBs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S439/00—Electrical connectors
    • Y10S439/931—Conductive coating

Definitions

  • the present invention relates to a connector provided with at least two adjacent cavities to accommodate terminals, the connector having a metallized plastic structure in order to at least partly shield at least one cavity from the other cavities.
  • Such a connector is known from International Patent Application WO 92/11671.
  • the body of the known connector is constructed from a plurality of plates which comprise recesses which form half of the cavities of the connector accommodating terminals in the assembled state.
  • To assemble the known connector the plates are fixed together by suitable fixing means. All plates are metallized with the exception of areas in the recesses.
  • all terminals are shielded from external electromagnetic radiation.
  • the recesses accommodating the terminals are not metallized to prevent short-circuits to ground, cross-talk between adjacent terminals, especially those in the same rows, is not prevented which is especially a problem when frequencies are increasing.
  • European Patent Application 0,562,691 discloses a twin-ax insert provided with a separate metal external conductor folded around an insulating body.
  • a connector as defined in the preamble is characterized in that said connector is selectively metallized and comprises at least partly the following housing structure between each shielded cavity and its adjacent cavities: a first insulating plastic wall - at least one metal layer - a second insulating plastic wall, said at least one metal layer being provided as a coating on said first and/or said second plastic walls.
  • the connector comprises at least a first and a second housing part, the first housing part comprising at least one cavity to accommodate one terminal and being selectively metallized at the outside surface surrounding said at least one cavity, the second housing part comprising at least one further cavity to accommodate one further terminal and being selectively metallized at the outside surface surrounding said at least one further cavity, the first and second housing parts being designed in such a way as to be able to be inserted into each other in order to yield said connector comprising at least two adjacent coaxial terminals.
  • all cavities may be entirely enclosed by a metal layer and, thus, by a Faraday cage which is very effective against cross-talk between adjacent terminals in said cavities.
  • the connector of the first embodiment may comprise a comb-like third housing part that can be fixed to said first and second housing parts inserted into each other to provide separating walls between adjacent columns of terminals extending from said first and second housing parts inserted into each other.
  • a comb-like third housing part provides for a mechanical protection between adjacent columns of terminals extending from said first and second housing parts inserted into each other.
  • said separating walls comprise moulded-in plates.
  • Said moulded-in plates provide for excellent cross-talk reduction between adjacent columns of terminals.
  • the connector may be surface mounted to a substrate by means of surface mount connection means connected to both the selectively metallized connector and the ground layer on said substrate.
  • the connector according to the invention comprises several adjacent cavities to receive terminals, said cavities being separated by cavity walls provided with additional, internally metallized through-holes having predetermined cross-sections and surrounding said cavities.
  • the electrical performance of this embodiment of the invention is less than the electrical performance of the first mentioned embodiment, since there are always unshielded parts between adjacent cavities giving rise to cross-talk problems. However, these unshielded parts may be kept to a minimum in order to reduce cross-talk to a minimum.
  • the advantage of the connector according to the latter embodiment is that it is integrally made and is not made of separate housing parts which do have to meet manufacturing tolerance requirements in order to ease the assembly of the connector.
  • the connector may comprise a housing provided with adjacent, internally metallized cavities, and insulating sleeves to be inserted into corresponding cavities and to accommodate corresponding terminals.
  • the connector according to the invention may comprise an insulating housing provided with adjacent cavities, and externally metallized sleeves to be inserted into corresponding cavities and to accommodate corresponding terminals.
  • the connector according to the invention may be made suitable to accommodate at least one twin-ax connection.
  • the connector according to the invention comprises at least one cavity accommodating a twin-ax insert member externally metallized and electrically contacting a ground layer on the connector's surface, which ground layer also electrically contacts at least one ground terminal adjacent to said twin-ax insert member.
  • FIG 1 a connector according to a first embodiment of the invention is shown.
  • the connector 1 of figure 1 comprises three housing parts 2, 3, 4, each preferably molded from an insulating material.
  • the first housing part 2 can be inserted into the second housing part 3, while the third housing part 4 is a tail cover to protect adjacent columns of terminals 14 of the connector 1.
  • the first housing part 2 comprises a metal layer 11 on its outside surface.
  • the cavities 5 of the first housing part are not coated with any metal layer.
  • the first housing part 2 comprises three columns of four rows of cavities 5.
  • Each cavity 5 comprises a terminal 14.
  • Each column of four cavities 5 comprises rims 7 extending from the external surface of the first housing part 2 parallel to the axial direction of the cavities 5.
  • Opposite the rims 7 the intermediate column and the right-hand column comprise recesses 9 extending parallel to the axial direction of each cavity 5.
  • the second housing part 3 comprises a metal layer 12 on its outside surface and comprises a structure of also three columns of four rows of cavities 6.
  • Rims 8 extend from the left-hand column and the intermediate column parallel to the axial direction of cavities 6. Opposite to the rims 8 the left-hand column and the intermediate column are provided with recesses 10. Recesses 10 are also provided in the right-hand column of cavities 6 opposite rims 8 in the intermediate column.
  • the external dimensions of the cavities 5 and the cavities 6, respectively, of the first housing part 2 and the second housing part 3, respectively, are selected in such a way that the first housing part 2 and the second housing part 3 can be inserted into each other, whereby rims 7 will fit into recesses 10 and rims 8 will fit into recesses 9. Inserting the first housing part 2 and the second housing part 3 into each other yields a connector body with six adjacent columns of four rows of coaxial cavities.
  • Each cavity 5, 6 comprises a terminal 14 extending from a rear side of the first and second housing parts 2, 3 inserted into each other.
  • the terminals 14 can be bent 90° in order to allow a right angle connection to a substrate, printed circuit board or the like (not shown).
  • Each terminal 14 comprises a connecting end 13 which, by way of example, is shown to be a press-fit connection. However, any other way of connecting the terminals 14 to a substrate is possible.
  • a third housing part 4 having a form of a tail cover or a comb-like structure, may be provided.
  • the tail cover 4 comprises several intermediate walls to be inserted between adjacent columns of terminals 14.
  • the housing parts 2, 3, 4 may each by provided with appropriate extensions and/or recesses to allow connection between these three housing parts.
  • the first housing part 2 is coated with metal layer 11
  • the second housing part 3 is coated with metal layer 12
  • the third housing part 4 is coated with metal layer 15.
  • the side surfaces of the walls 16 cannot be metallized since that would cause short circuits.
  • Figure 2 shows the connector 1 of figure 1 in the assembled state.
  • intermediate walls 16 of the tail cover 4 may each be provided with moulded-in plates electrically connected to metal layer 15 connected to ground. This is shown in figure 3.
  • tail cover 4 may entirely be metallized with metal layer 15 also covering the side surfaces of intermediate walls 16 after which these side surfaces of intermediate walls 16, as well as the inner surfaces of the outside walls of tail cover 4 are coated with an insulating layer to prevent short circuits between terminals 14.
  • Figure 4 shows a connector according to figures 1 and 2 surface mounted to a substrate 22 which may be a printed circuit board (pcb) or a back plane or the like.
  • the connecting ends 13 (figures 1 and 2) are accommodated in appropriate corresponding holes (not shown) in the substrate 22.
  • the substrate 22 is provided with a ground layer 17.
  • Surface mount connection means 21 are provided to form an electrical contact between ground layer 17 and the outside metal layers 11, 12, 15 of the housing parts 2, 3, 4 of connector 1. Suitable surface mount connection means 21 are known to persons skilled in the art and need no further explanation in the present invention.
  • press-fit pegs mounted on the connector 1 and accommodated in plated holes of the substrate 22 can be used.
  • FIG. 5 shows an alternative embodiment of a connector 23 according to the invention.
  • Connector 23 comprises a housing selectively metallized with metal layer 25.
  • connector 23 comprises cavity walls 33 between cavities 32.
  • the cavity walls 33 are provided with additional through-holes 31.
  • the additional through-holes 31 are internally metallized.
  • the dimensions of the cross-sections of the additional through- holes 31 is chosen in such a way that adjacent cavities 32 are only mechanically connected to each other by bridges 46 which are as small as possible.
  • the dimensions of the bridges 46 follow from the overall mechanical requirements of the connector 23. By choosing the bridges 46 as small as possible as high shielding as possible between adjacent cavities is obtained.
  • Each cavity 32 is designed to accommodate a corresponding terminal 29.
  • the connector 23 may be provided with extensions 27 to fix the connector 23 to a substrate (not shown).
  • the connector 23 is designed to be inserted into a mating connector 24 which is also provided with a metal layer 26 at its surface.
  • the connector 23 comprises female terminals 29 while the connector 24 comprises male terminals 30.
  • connectors according to the invention are not restricted to these types of terminals. Cavities 32 may be provided with male-type terminals, whereas then the connector 24 may be provided with female-type terminals.
  • both connectors 23 and 24 may be provided with hermaphrodite-like terminals (not shown).
  • Connector 24 may also be provided with extensions 28 to connect the connector 24 to a substrate (not shown).
  • Figure 6 shows a further embodiment of the connector according to the invention.
  • the same reference signs used in figures 5 and 6 refer to the same parts of the connectors shown.
  • the connector 23 according to figure 6 also comprises one or more metallized cavities 32'.
  • connector 24 according to the embodiment of figure 6 comprises several terminals 30' which are connected to the ground metal layer 26 covering connector 24.
  • the metal layer inside the metallized cavities 32' of connector 23 electrically contact metal layer 25 on the outside surface of connector 23. Therefore, those terminals 29 inserted into metallized cavities 32' electrically contact ground.
  • FIGS 5 and 6 show cavities 32, 32' having square cross-section dimensions.
  • cavities of the connector according to the invention may have any shape of cross-section.
  • Figures 7a, 7b, 8a, and 8b show connectors according to the invention having circular cavities.
  • Connector 35 according to the embodiment of figure 7a comprises cylindrical cavities 36.
  • the intermediate walls 42 between adjacent cavities 36 comprise additional through-holes 38' which are entirely metallized.
  • Thin bridges 46 mechanically connect adjacent cavities 36. Only at the locations of the thin bridges 46 no electromagnetic shielding is obtained.
  • Each cavity 36 accommodates a terminal 37.
  • the terminal 37 may be connected to a cable 39 if required.
  • Figure 7b shows a connector 40 having cylindrical non-metallized cavities 36 accommodating terminals 37 which may be connected to a cable 39.
  • Each cavity 36 is surrounded by a plurality of cylindrical additional metallized through-holes 41. Additional through-holes 41 have a smaller diameter than the diameter of the cavities 36.
  • the bridges 47 between adjacent cavities 36 are much thicker than the corresponding bridges 46 in figure 7a. This provides for more mechanical stability although cross-talk reduction between terminals in adjacent cavities will be less than in the embodiment according to figures 5, 6, and 7a.
  • Figures 8a and 8b show connectors 35 provided with coaxial shielded terminals 37.
  • each cavity 36' which may have a circular cross-section, is entirely metallized.
  • an insulating sleeve 45 is provided between the side wall of cavity 36' and the terminal 37.
  • the housing 34' of connector 35 according to the embodiment of figure 8a may be metallized.
  • a non-metallized connector 35 according to the embodiment of figure 8b can be used instead of the metallized connector 35 according to the embodiment of figure 8a.
  • connector 35 may comprise non-metallised additional holes 38 and a non-metallized housing 34.
  • an externally metallized plastic sleeve 45' is used between the side wall of the cavity 36 and the terminal 37. Note that in the embodiments according to figures 8a and 8b the terminals 37 are entirely surrounded by a metal shielding thus providing for a Faraday cage effect.
  • Figures 9a to 9c show that the teaching of the present invention can also be used to provide a twin-ax connection within a connector having a plurality of cavities arranged in columns and rows.
  • the connectors 50 and 53 shown in figure 9a are known as "Autobahn" -connectors having a plurality of cavities arranged in thirty two columns of three rows a, b, c.
  • Connector 50 is a male-type of connector comprising terminal pins 51.
  • Connector 53 is a female-type of connector and comprises female terminals 54.
  • the cavities on the positions b20, b21, b22, b23 have a predetermined purpose: both cavities b20 and b23 do have to comprise ground terminals, whereas both cavities b21 and b22 do have to comprise "Autobahn"-bus terminals.
  • FIG 9b shows top cross-sections through row b of connectors 50 and 53, respectively.
  • Connector 50 is shown to have ground pins 57 on each of the positions b20 and b23.
  • Connector 53 is shown to have female ground terminals 59 on positions b20 and b23, respectively.
  • On the positions b21 and b22 each of the connectors 50 and 53 comprise one combined large cavity large enough to accommodate a male-type of twin-ax insert 52 or a female-type of twin-ax insert 55, respectively.
  • Both the twin-ax inserts 52 and 55 are made of externally metallised plastic insert members (figure 9c).
  • Connector 50 is provided with a metal layer 56 extending through the cavities on the positions b20 and b23 as well as in the combined cavity on positions b21 and b22, as shown in figure 9b.
  • the ground pins 27 contact the metal layer 56.
  • the externally metallized twin-ax insert 52 contacts the metal layer 56. Therefore, the externally metallized twin-ax insert 52 is shielded since its outside metal layer is grounded.
  • Connector 53 is provided with a metal ground layer 58 which extends through the cavities on the positions b20 and b23 as well as through the combined cavity on the positions b21 and b22 into which twin-ax insert 55 is inserted. Therefore, the outside metallized surface of twin-ax insert 55 is grounded and acts as an electromagnetic shielding.
  • first metal layer subareas mentioned above correspond to those metal layers on the surface of the different plastic members shown in the figures.
  • said first metal layer subareas correspond to metal layers 11, 12, and 15.
  • a high energy beam may be used, for example an electron beam or ion beam to separate the first metal layer subareas from the remaining first metal layer area.
  • a light beam or a laser beam may be used instead, whereas also grinding may be used. Removing any non-selected metal layer areas in step d. referred to above may be done by chemical etching or by grinding processes.
  • the first metal layer may be made of electroless copper or nickel and may have a thickness of 1 to 2 ⁇ m.
  • the second thickness referred to above may be 5 to 10 ⁇ m.
  • the galvanic metal layer may be coated with a top coat finish layer, for instance, made of nickel, gold, or tin-lead, which finish layer may have a thickness between 2 to 4 ⁇ m.
  • a top coat finish layer for instance, made of nickel, gold, or tin-lead, which finish layer may have a thickness between 2 to 4 ⁇ m.
  • twin-ax inserts as shown in figures 9a to 9c is not restricted to connector types shown in figures 9a to 9c. These twin-ax inserts may, for instance, also be applied in connectors as shown in any of the other preceding figures.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
EP94202142A 1994-07-22 1994-07-22 Connecteur sélectivement métallisé avec au moins un contact coaxial ou biaxial Expired - Lifetime EP0693795B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP94202142A EP0693795B1 (fr) 1994-07-22 1994-07-22 Connecteur sélectivement métallisé avec au moins un contact coaxial ou biaxial
DE69417224T DE69417224T2 (de) 1994-07-22 1994-07-22 Selektiv metallisierter Verbinder mit mindestens einem koaxialen oder biaxialen Kontakt
US08/503,124 US5743765A (en) 1994-07-22 1995-07-17 Selectively metallized connector with at least one coaxial or twin-axial terminal
KR10-1995-0021282A KR100355731B1 (ko) 1994-07-22 1995-07-20 적어도하나의동축또는쌍축단자를갖춘선택적으로금속화된커넥터
JP7187538A JPH08288019A (ja) 1994-07-22 1995-07-24 少なくとも１の同軸あるいは２軸端子を有する選択的に金属化されたコネクタ

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP94202142A EP0693795B1 (fr) 1994-07-22 1994-07-22 Connecteur sélectivement métallisé avec au moins un contact coaxial ou biaxial
US08/503,124 US5743765A (en) 1994-07-22 1995-07-17 Selectively metallized connector with at least one coaxial or twin-axial terminal

Publications (2)

Publication Number Publication Date
EP0693795A1 true EP0693795A1 (fr) 1996-01-24
EP0693795B1 EP0693795B1 (fr) 1999-03-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP94202142A Expired - Lifetime EP0693795B1 (fr) 1994-07-22 1994-07-22 Connecteur sélectivement métallisé avec au moins un contact coaxial ou biaxial

Country Status (3)

Country Link
US (1) US5743765A (fr)
EP (1) EP0693795B1 (fr)
JP (1) JPH08288019A (fr)

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FR2780560A1 (fr) * 1998-06-30 1999-12-31 Framatome Connectors Int Connecteur pour signaux a haute frequence
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NL1009531C2 (nl) * 1998-06-30 2000-01-04 Framatome Connectors Belgium Connector en werkwijze voor het vervaardigen van een connector.
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EP0961354A3 (fr) * 1998-05-26 2000-05-10 Framatome Connectors International Dispositif de connexion ayant un ressort de contact en forme de U
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JP3831333B2 (ja) * 2002-11-13 2006-10-11 第一電子工業株式会社 電気コネクタ
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CN112152020B (zh) * 2015-09-11 2022-08-30 安费诺富加宜（亚洲）私人有限公司 具有选择性镀层塑料部件的电连接器及其制造方法
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JPH08288019A (ja) 1996-11-01
US5743765A (en) 1998-04-28
EP0693795B1 (fr) 1999-03-17

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